2024 401k Contribution Limits For Simple 401k Plans. The 2024 contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023. Starting in 2024, employees can contribute up to $23,000 into their 401 (k), 403 (b), most 457 plans or the thrift savings plan for federal.

If you’re under the age of 50, you can contribute up to $22,500 to your 401 (k) plan in 2023. On the other hand, contributions for simple 401(k) plans are cut off at $16,000.